Zone 1 -
Entire states of Kansas and Missouri
Winter Shift at 0001 on 1 Oct
Summer Shift at 0001 on 1 May
Zone 2 -
Entire states of Arkansas, Oklahoma, and Tennessee
Winter Shift at 0001 on 15 Oct
Summer Shift at 0001 1 May
Upper state portion of Texas - above and including Plainview, Texas
Upper state portion of South Carolina - above and including Florence, South Carolina
Dissection lines extend horizontally across both states
Winter Shift at 0001 on 15 Oct
Summer Shift at 0001 on 1 May
Zone 3 -
States of Texas, Mississippi, Alabama, and Georgia are dissected with a line from Midland, Texas to Savannah, Georgia
Portions north of that line
Lower portion of South Carolina
Winter Shift at 0001 on 1 Nov
Summer Shift at 0001 on I Apr
Zone 4 -
Entire state of Louisiana, lower portions of Texas, Mississippi, Alabama, and Georgia south of dissection line in Zone 3
Upper portion of Florida
Winter Shift at 0001 on 1 Dec
Summer Shift at 0001 on 1 Apr
Zone 5 -
Guantanamo Bay, Cuba
Southern portion of Florida
Dissected with a line extending from Cedar Key, Florida on the western side to Ormond Beach, Florida on the eastern side
No change-Uniform of the day is service dress white (prescribed) and summer white (alternate) year round.
CNRSE Zone Map-Uniform Shift
PDF: CNRSE Zone Map